Stay-washer.



J. KENNEDY.

STAY WASHER.

APPLICATION FILED JULY 6, 1912.

1,061,480. Patented May 13, 1913.

UNI

iI ICE.

JOSEPH KENNEDY, OF NEW YORK, N. Y.

STAY-WASHER.

Specification of Letters Patent.

Application filed July 6, 1912.

Patented May 13, 191 3.

Serial No. 707,981.

To all whom it may concern Be it known that I, JOSEPH KnNNnnr, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful lm' provements in Stay-\Vashers, of which the following a specification, reference being had to the accompanying drawings, forming a part thereof.

My invention relates particularly to a device which I have called a stay-\vashe1" which. is especially adapted for use in conjunction with pivot-bolts such as that herein shown and described.

I will describe my invention in the following specification and will point out the novel features thereof in appended claims.

Referring to the drawings, Figure 1 shows in elevation a pivot bolt with the parts thereof in the relative positions they are made to assume when being passed through an opening. Fig. 2 is a similar view of the same device with the pivoted holding member thereof swung into a differ ent position. Fig. 3 is an end elevation of the bolt shown in Fig. 2. In Fig. 4t the pivot bolt is shown in similar elevation, in its holding position with one of my novel stay washers upon it. In Fig. 5 I have illus trated in front elevation a plurality of forms of stay washers.

Like characters of reference designate corresponding parts in all of the figures.

The threaded shank of the pivot bolt is designated by the numeral 10. One end of this bolt is flattened as at 11 to form a bear ing face offset to the side of the threaded portion of the shank for a holding member 12 which is loosely pivoted thereto. The holding member is preferably of flat metal with the edges thereof corrugated or roughened as shown. The pivot is at, one side of the center, measured longitudinally, of the holding member so that when the bearing face 11 is held in a vertical plane, this member will swing into a vertical position.

Pivot bolts of this general character have been known before, but before describing the stay-washer which I have invented, I will point out briefly the manner in which they are used.

By placing the holding member in a position in alinement with the bolt, it may be thrust through a hole such as is shown in Figs. 1, 2, and 4 at 14 in a Wall 15 for example of sheet metal. When this end of the bolt has been thrust far enough through the hole to allow the holding member to clear the inner face of the wall, this member will swing by gravity about its pivot, as shown in Fig. 2 after which the bolt may be drawn back until arrested by the engagement of the holding member with the wall. It is shown in such position in Fig. 4-, in which tigure it is illustrated as passing through a block to which it is in this case to hold against the wall 15. To facilitate the use of such bolts, I have found it desirable to provide some means for holding them in position until the nut 17 can be turned into place. llereto'lorc nothing partitailarly adapted for this purpose has been available and the workman has been obliged to hold the bolt with his lingers or to resort to some makeshift such as tying a piece of string or winding a wire about the bolt. To fill this need, I have invented the stay-nurshor 20 which is made of very thin springy sheet metal having a central hole therein smaller than the diameter of the bolt 10 and cut away as at 21 so as to form a plurality of inwardly projecting prongs 22. The sheet metal is 1 rcferably creased radially as at 9.3 in order to increase the resiliency of the prongs. Now when the bolt is in the position in which it is shown in Fig. i, one of these stay-washers may he slipped over it longitiulinally. As it passes over the bolt, the prongs 22 will snap over the threads thereon, 'atchet-like, and will cause the washer to be retained on the bolt with suflicient grip to hold the bolt in place temporarily until the nut 17 is placed thereon and turned into holding position. It is to be noted that the stay-washer will prevent the end pressure attemlant upon putting the nutonto the bolt from pushing the bolt into the inside of wall 15 which in many conditions would cause it to be lost. \Vhen the nut is screwed on, it will seat upon and flatten out the i'asher which will form a bearing surface for the nut and will in no way detract from the appca once of the device in use.

At 20 20, 20 20, 20, 20", 20, 20", 20, 20-, 20, 20 20, 20, in Fig. 5 a va riety of forms of stay-washers is shown. These are added merely to show that the specific form of that portion of the staywashcr which engages the threads of the bolt not an essential feature, but that they may be cut in a large variety of shapes. These forms are so simple that no specific description of them is necessary.

WVhat I claim is:

1. In combination with a machine bolt having a threaded shank and a holding member pivoted on the end thereof, a staywasher on said shank of thin sheet spring metal constructed with an opening therein, the said opening being smaller than the diameter of said shank, with the portions thereof adjacent said opening of sufficient resiliency to allow said washer to be pushed over the shank longitudinally and to catch on the threads of the shank, and folds in the metal of the washer radiating from the opening therein.

2. In combination with a machine bolt having a threaded shank and a holding member pivoted on the end thereof, a staywasher on said shank of thin sheet spring metal constructed with a star-like central opening therein, the sheet metal between the points of said star forming prongs projecting toward the center of the washer but leaving between them an opening smaller than the diameter of the threaded shank, said prongs having sufficient resiliency to allow said washer to be pushed over the shank longitudinally and to catch on the threads of the shank.

8. In combination with a machine bolt having a threaded shank and a holding member pivoted on the end thereof, of a stay-washer of thin sheet metal on said shank constructed with an opening therein smaller than the diameter of said shank, with port-ions thereof adjacent said opening of sufficient resiliency to allow said washer to be pushed over the shank longitudinally.

4. In combination with a machine bolt having a threaded shank and a holding member pivoted on the end thereof, of a stay-washer of thin sheet spring metal on said shank constructed with a star-like central opening therein, the sheet metal between the points and said star forming prongs projecting toward the center of the washer but leaving between them an opening smaller than the dlamet-er of sa1d shank,

said prongs having sufficient resiliency to allow the washer to be pushed over the shank longitudinally and to catch on the threads of the shank, and folds in the metal of the washer radiating fro-m the points of Copies of this patent may be obtained for five cents each. by addressing the Commissioner of Patents, Washington, D. C. 

